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Cosmos EVM

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Cronos
2026-08-31 03:00:09

Cronos, Fogo and Cosmos EVM Chains Turned to Shutdowns as Last-Resort Crisis Response

Three separate incidents across Cronos, Fogo, and chains using the Cosmos EVM module ended with the same emergency measure: stop the chain. On Aug. 30, Cronos validators froze the network after an attacker allegedly manipulated TONIC, a thinly traded governance token tied to the Tectonic lending protocol, and used inflated collateral to borrow about $75 million in assets such as cbBTC, USDC, and WETH. According to on-chain researcher Weilin Li, the attacker held about 364.6 trillion TONIC, and the math implied a post-manipulation collateral value of roughly $375 million. Validators halted the chain before most of the funds could leave; around $6 million was bridged to Ethereum, while about $60 million remained stuck on Cronos. Fogo followed a different path. The Fogo Foundation said on Aug. 29 at 9:13 PM ET that an unknown attacker had "compromised" the foundation and transferred 400 million FOGO tokens. The foundation initially said the blockchain itself was unaffected and kept running, but about 15 hours later the mainnet was paused so validators could upgrade the network to "restrict addresses associated with unauthorized activity." The stolen amount represented 4% of the 10 billion genesis supply and more than 10% of circulating supply. Cosmos EVM exposed a supply-chain problem rather than a single-chain failure. Cosmos Labs said a bug in the shared open-source module affected all chains running it, and on Aug. 24 urged validators to halt if they could not immediately coordinate a state-breaking upgrade. The incidents landed differently in the market, but together they showed how quickly decentralization debates return when validator coordination becomes the final line of defense.

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